The MAGA march on D.C. showed Trump supporters are not a monolith, but their dedication to the president is singular. (Video: The Washington Post)

Waves never stop coming, and certainly not in American politics.

Republicans of my generation treasure Ronald Reagan’s sweep in 1980 as the once-in-a-lifetime election that broke decisively in favor of the GOP for both the presidency and the Senate.

It happened again 14 years later for the House of Representatives. I was co-hosting an election night special at Los Angeles PBS affiliate KCET in 1994 when the Newt Gingrich-led tsunami broke upon the land. “If it was a fight, they’d stop it,” I chortled as the green light blinked on to open the show. Later that evening, then-Rep. Christopher Cox (R-Calif.) dropped by and confided to me offstage: “If anybody tells you they saw this coming, they are lying.”